בֵּאדַ֜יִן קְרֵ֣ב נְבוּכַדְנֶצַּ֗ר לִתְרַע֮ אַתּ֣וּן נוּרָ֣א יָקִֽדְתָּא֒ עָנֵ֣ה וְאָמַ֗ר שַׁדְרַ֨ךְ מֵישַׁ֧ךְ וַעֲבֵד־נְג֛וֹ עַבְד֛וֹהִי דִּֽי־אֱלָהָ֥א עליא [עִלָּאָ֖ה] פֻּ֣קוּ וֶאֱת֑וֹ בֵּאדַ֣יִן נָֽפְקִ֗ין שַׁדְרַ֥ךְ מֵישַׁ֛ךְ וַעֲבֵ֥ד נְג֖וֹ מִן־גּ֥וֹא נוּרָֽא׃
דענצמאָל האָט נבֿוכַדנֶצַר גענענט צו דער טיר פֿון דעם אױװן מיט ברענעדיקן פֿײַער; ער האָט אױסגערופֿן און געזאָגט: שַדרַך, מֵישַך, און עַבֿד-נגוֹ, קנעכט פֿון העכסטן גאָט, גײט אַרױס, און קומט אַהער. דענצמאָל זײַנען שַדרַך, מֵישַך, און עַבֿד-נגוֹ, אַרױסגעגאַנגען פֿון פֿײַער.
Rashi
approached the gate of the... fiery furnace He approached the gate of the court, in which the furnace was situated, to speak with them, and at first, he saw them from afar.
Ibn Ezra
[Daniel 3:26] Then (בֵּאדַיִן - Be'adayin)... to the opening/gate (לִתְרַע - l'taraʿ): [Means] To the gate (l'shaʿar). And [the root ת-ר-ע also appears in Hebrew, as in the name] “Tirathites (Tirʿatim), Sucathites” [I Chronicles 2:55].
Rashi
Step out and come “step out and come,” but he did not say to them, “step out and ascend.” From here we learn that the floor of the furnace floated up and became even with the ground, so that they should not be troubled to go up.
Rashi
Then...came out Although they were confident of the miracle that had been performed for them, they did not dare to treat the king lightly, to go out without permission.